WO2016114102A1 - Dispositif optique et appareil d'entrée d'opération - Google Patents

Dispositif optique et appareil d'entrée d'opération Download PDF

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Publication number
WO2016114102A1
WO2016114102A1 PCT/JP2015/086572 JP2015086572W WO2016114102A1 WO 2016114102 A1 WO2016114102 A1 WO 2016114102A1 JP 2015086572 W JP2015086572 W JP 2015086572W WO 2016114102 A1 WO2016114102 A1 WO 2016114102A1
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WO
WIPO (PCT)
Prior art keywords
light
guide plate
convergence
space
optical device
Prior art date
Application number
PCT/JP2015/086572
Other languages
English (en)
Japanese (ja)
Inventor
篠原　正幸
智和 北村
勇司 広瀬
靖宏 田上
奥田　満
和幸 岡田
Original Assignee
オムロン株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2015180912A external-priority patent/JP6558166B2/ja
Application filed by オムロン株式会社 filed Critical オムロン株式会社
Priority to CN201580070068.XA priority Critical patent/CN107111150B/zh
Priority to US15/538,842 priority patent/US10338749B2/en
Priority to DE112015005938.5T priority patent/DE112015005938B4/de
Publication of WO2016114102A1 publication Critical patent/WO2016114102A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
    • G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
    • G02B6/122—Basic optical elements, e.g. light-guiding paths
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means

Definitions

  • the present invention relates to an optical device and an operation input device.
  • a stereoscopic display device including a light guide plate, a light source, and a parallax barrier type or lens array type mask or lens array disposed on the surface side of the light guide plate is known (for example, Patent Documents). 1).
  • a display unit having a planar image display surface for displaying a two-dimensional image including a three-dimensional image, and a three-dimensional image in the two-dimensional image that is arranged in parallel with the image display surface and is separated from each other.
  • Patent Document 2 An image formed by a microlens array having a larger effective area and a lens frame region surrounding the effective region of the microlens array, and displaying a real image of a two-dimensional image in a space located on the opposite side of the display unit of the microlens array
  • the detection light for detecting an object may be substantially blocked by the mask.
  • detection light may be greatly diffused by the lens array.
  • the optical device includes a light guide plate that guides light in a plane parallel to the light emission surface, and is provided on the opposite side of the emission surface with respect to the light guide plate. And a sensor for detecting an object located on the exit surface side by light passing through the back surface and the exit surface.
  • the light guide plate is incident with light guided by the light guide plate, and is a single convergence point in space.
  • the convergence points or convergence lines are different from each other among the plurality of light convergence portions, and an image is formed in the space on the exit surface side by the collection of the plurality of convergence points or convergence lines.
  • the plurality of light converging portions may be formed along a predetermined line in a plane parallel to the emission surface.
  • the plurality of light converging units may form an image indicating a position where a user operation is received in at least one of a detection range where the sensor can detect an object and a vicinity of the detection range in the space on the exit surface side.
  • the sensor may include a light receiving unit that receives light from a position in space on the exit surface side through the exit surface and the back surface.
  • the sensor may further include a light projecting unit that projects light through the exit surface and the back surface in the space on the exit surface side.
  • the light receiving unit reflects the reflected light projected from the light projecting unit and reflected by the object. It may receive light.
  • the plurality of light converging units may form an image indicating a position for accepting a user operation in at least one of a predetermined range on the exit surface side and a vicinity of the predetermined range.
  • a plurality of cylindrical lenses that are provided at positions corresponding to a plurality of light converging portions on the light exit surface side of the light guide plate, and are respectively guided by the light guide plate and emitted from the light exit surface to restrict the spread of light from the corresponding light converging portions. May further be provided.
  • the sensor may detect an object by light along a plane orthogonal to the emission surface and parallel to the extending direction of the plurality of cylindrical lenses.
  • the plurality of cylindrical lenses may extend along a direction orthogonal to the direction in which the light guide plate guides light.
  • the plurality of cylindrical lenses may extend along the direction in which the light guide plate guides light.
  • an operation input device includes the above-described optical device and a determination unit that determines that an object is in a position to receive a user operation when an object located on the exit surface side is detected by a sensor. .
  • the operation input device 20 in one Embodiment is shown schematically with the three-dimensional image projected on space.
  • the cross section of the yz plane of the operation input device 20 is shown schematically.
  • the cross section of the xz plane of the operation input device 20 is shown schematically.
  • An operation input device 320 as a modification of the operation input device 20 is schematically shown.
  • An operation input device 420 as a modification of the operation input device 20 is schematically shown.
  • An operation input device 620 as a modification of the operation input device 20 is schematically shown.
  • An operation input device 720 as a modification of the operation input device 20 is schematically shown.
  • the light converging part 130 and the light converging part 132 as a modification of the light converging part 30 are shown schematically.
  • FIG. 1 schematically shows an operation input device 20 according to an embodiment together with a stereoscopic image projected onto a space.
  • the operation input device 20 includes the display device 10, a sensor 60, and a control unit 80.
  • the operation input device 20 functions as a virtual switch.
  • the figure used for description of embodiment shall be schematic or typical for the purpose of explaining in an easy-to-understand manner. The figure used for description of the embodiment may not be drawn on an actual scale.
  • the display device 10 emits light that forms the image 6 of the virtual switch.
  • the image 6 is a stereoscopic image that is recognized in space by the user.
  • the image 6 includes a partial image 7 representing an operation surface recognized in space.
  • the sensor 60 detects the presence of an object located in the vicinity of the partial image 7. As an example, the object is a user's finger 90. When the sensor 60 detects that an object is present in the vicinity of the partial image 7, the display device 10 outputs a signal indicating that the virtual switch has been pressed to the outside.
  • the display device 10 has an emission surface 71 that emits light.
  • the display device 10 forms an image 6 as a three-dimensional image with light emitted from the emission surface 71.
  • the three-dimensional image refers to an image that is recognized as being at a position different from the emission surface 71 of the display device 10.
  • the three-dimensional image includes, for example, a two-dimensional image recognized at a position away from the emission surface 71 of the display device 10. That is, the stereoscopic image is a concept including not only an image recognized as a three-dimensional shape but also an image having a two-dimensional shape recognized at a position different from the emission surface 71 of the display device 10.
  • the display device 10 includes a light guide plate 70 and a light source 21.
  • the light source 21 is, for example, an LED light source.
  • the light guide plate 70 is formed of a resin material that is transparent and has a relatively high refractive index.
  • the material forming the light guide plate 70 may be, for example, polycarbonate resin (PC), polymethyl methacrylate resin (PMMA), glass, or the like.
  • the light guide plate 70 has a back surface 72 opposite to the exit surface 71.
  • the light guide plate 70 includes an end surface 73, an end surface 74, an end surface 75, and an end surface 76 that are the four end surfaces of the light guide plate 70.
  • the end surface 73 is a light incident end surface of the light guide plate 70.
  • the end surface 73 is provided with the light source 21, and light from the light source 21 enters the light guide plate 70 from the end surface 73.
  • the end surface 74 is a surface opposite to the end surface 73.
  • the end surface 76 is a surface opposite to the end surface 75.
  • the light guide plate 70 guides light from the light source 21 in a plane shape in a plane parallel to the emission surface 71.
  • a right-handed orthogonal coordinate system of the x axis, the y axis, and the z axis may be used.
  • the z-axis direction is determined in a direction perpendicular to the emission surface 71.
  • the direction from the back surface 72 to the emission surface 71 is defined as the z-axis plus direction.
  • the y-axis direction is determined in a direction perpendicular to the end face 73.
  • the direction from the end surface 73 to the end surface 74 is defined as the y-axis plus direction.
  • the x-axis is a direction perpendicular to the end face 75 and the end face 76, and the direction from the end face 75 to the end face 76 is defined as the x-axis plus direction.
  • a plane parallel to the xy plane may be called an xy plane
  • a plane parallel to the yz plane may be called a yz plane
  • a plane parallel to the xz plane may be called an xz plane.
  • FIG. 2 schematically shows a cross section of the yz plane of the operation input device 20.
  • FIG. 3 schematically shows a cross section of the operation input device 20 in the xz plane.
  • a plurality of light converging portions 30 including a light converging portion 30a, a light converging portion 30b, and a light converging portion 30c are formed on the back surface 72 of the light guide plate 70.
  • the light converging part 30 is formed substantially continuously in the x-axis direction. Light guided by the light guide plate 70 is incident on each position of the light converging unit 30 in the x-axis direction.
  • the light converging unit 30 substantially converges the light incident on each position of the light converging unit 30 to fixed points respectively corresponding to the light converging unit 30.
  • FIG. 1 particularly shows a light converging unit 30a, a light converging unit 30b, and a light converging unit 30c as a part of the light converging unit 30, and in each of the light converging unit 30a, the light converging unit 30b, and the light converging unit 30c.
  • a state in which a plurality of light beams emitted from the light converging unit 30a, the light converging unit 30b, and the light converging unit 30c converge is shown.
  • the light converging unit 30 a corresponds to the fixed point PA on the image 6. Light rays from each position of the light converging unit 30a converge to a fixed point PA. Therefore, the wavefront of the light from the light converging unit 30a becomes a wavefront of light emitted from the fixed point PA.
  • the light converging unit 30 b corresponds to the fixed point PB on the image 6. Light rays from each position from the light converging unit 30b converge to the fixed point PB. As described above, the light beam from each position of the arbitrary light converging unit 30 substantially converges to a fixed point corresponding to the light converging unit 30.
  • a wavefront of light that emits light from a corresponding fixed point can be provided by an arbitrary light converging unit 30.
  • the fixed points corresponding to each light converging unit 30 are different from each other, and an image 6 recognized in space is formed by a collection of a plurality of fixed points respectively corresponding to the light converging units 30.
  • the display device 10 projects a stereoscopic image on the space.
  • each of the light converging portions 30 includes a large number of reflecting surfaces formed substantially continuously in the x-axis direction.
  • the surface density of the reflecting surface on the back surface 72 is preferably 30% or less.
  • the reflected light from the reflecting surfaces of the arbitrary light converging units 30 converges to a fixed point corresponding to the light converging unit 30.
  • the light beams of the plurality of reflected lights from the plurality of reflecting surfaces included in the light converging unit 30a converge on the fixed point PA.
  • the light beams of the plurality of reflected lights from the plurality of reflecting surfaces of the light converging unit 30b converge at the fixed point PB.
  • the light beams of the plurality of reflected lights from the plurality of reflecting surfaces of the light converging unit 30c converge on the fixed point PC.
  • the light beam guided by the light guide plate 70 and passing through each position in the light guide plate 70 has a divergence angle smaller than a predetermined value around the direction connecting each position in the light guide plate 70 and the light source 21.
  • the light converging unit 30 When the light converging unit 30 is provided at a position away from the light source 21, the light guided by the light guide plate 70 and incident on the light converging unit 30 becomes light having a small spread around the y-axis direction. Therefore, for example, on a plane that includes the fixed point PA and is parallel to the xz plane, the light from the light converging unit 30a substantially converges to one fixed point.
  • the spread of the light beam that passes through the point inside and outside the light guide plate refers to the spread of light when the light beam is regarded as light that diverges from that point. Further, the spread of the light beam passing through the points inside and outside the light guide plate may be simply referred to as the spread of light.
  • the light incident on the light converging unit 30 has a spread in the z direction
  • the light from the light converging unit 30 converges on a line along the y axis including a fixed point in space.
  • the light converging part 30a is formed along the line 190a.
  • the light converging part 30b is formed along the line 190b.
  • the light converging part 30c is formed along the line 190c.
  • the line 190a, the line 190b, and the line 190c are straight lines substantially parallel to the x-axis.
  • the arbitrary light converging part 30 is formed substantially continuously along a straight line substantially parallel to the x-axis.
  • the light converging part 30 is formed along a predetermined line in a plane parallel to the emission surface 71. Then, each of the light converging units 30 causes the light guided by the light guide plate 70 to enter, and emit the emitted light in a direction substantially converging to one convergence point in space from the emission surface 71.
  • the emitted light is light in a direction diverging from the fixed point. Therefore, when the fixed point is on the rear surface 72 side of the light guide plate 70, the reflection surface of the light converging unit 30 causes the emission surface 71 to emit the emitted light in a direction substantially diverging from one convergence point in space.
  • each of the light converging portions 30 may be formed by a part of a Fresnel lens.
  • Sensor 60 is a limited reflection type optical sensor.
  • the detection range in which the sensor 60 can detect an object is substantially limited to a range 180 on the space on the emission surface 71 side.
  • the sensor 60 includes a light projecting unit 61 and a light receiving unit 64.
  • the range 180 is an area where the light projecting light beam of the light projecting unit 61 and the light received light beam of the light receiving unit 64 intersect.
  • the light projecting unit 61 projects light into the space on the emission surface 71 side.
  • the light projected by the light projecting unit 61 is detection light for detecting an object.
  • the detection light from the light projecting unit 61 is projected to the space on the exit surface 71 side through the exit surface 71 and the back surface 72.
  • the light receiving unit 64 receives light from a position on the space on the emission surface 71 side through the emission surface 71 and the back surface 72. When an object exists within a predetermined range 180 in the optical path of light projected from the light projecting unit 61 to the space on the emission surface 71 side, the light receiving unit 64 is projected from the light projecting unit 61 and is an object. The reflected light is received.
  • the light projecting unit 61 includes a light emitting unit 62 and a light projecting side lens 63.
  • the light receiving unit 64 includes a photo sensor 65 and a light receiving side lens 66.
  • the light emitting unit 62 emits light as detection light.
  • the light projecting side lens 63 reduces the spread of light from the incident light emitting unit 62 toward the range 180.
  • the light emitted from the light projecting side lens 63 passes through the light guide plate 70 and is emitted as detection light toward the space on the emission surface 71 side.
  • the light projected by the light projecting unit 61 may be invisible light such as infrared light.
  • the light emitting unit 62 may be an infrared LED.
  • the detection light When there is an object in the range 180, the detection light is reflected by the object, and the reflected light is directed to the light receiving unit 64.
  • the reflected light passes through the light guide plate 70 and enters the light receiving side lens 66.
  • the reflected light that has entered the light-receiving side lens 66 is condensed toward the photosensor 65 and enters the photosensor 65.
  • the detection light is not reflected by the object, or the reflected light does not enter the light receiving unit 64.
  • the control unit 80 acquires a signal indicating the amount of light received by the photosensor 65.
  • the control unit 80 determines that the virtual switch has been pressed and outputs a signal indicating that the virtual switch has been pressed to an external device. In this way, when the object located on the exit surface side is detected by the sensor 60, the control unit 80 determines that the object is in a position for receiving a user operation.
  • the partial image 7 of the image 6 represents the operation surface of the virtual switch.
  • the partial image 7 is an example of an image indicating a position where a user operation is received.
  • the partial image 7 is formed within the range 180. For this reason, when the object is positioned in the vicinity of the partial image 7, the presence of the object is detected.
  • the partial image 7 is not necessarily formed in the range 180, and may be formed at a position in the vicinity of the range 180.
  • the light converging unit 30 forms the partial image 7 in at least one of the range 180 where the sensor 60 can detect the object and the vicinity of the range 180 where the sensor 60 can detect the object in the space on the emission surface 71 side. To do. As a result, it can be determined that the virtual switch has been pressed.
  • the light guide plate 70 is transparent, a sensor 60 for optical detection can be provided on the back surface 72 side.
  • the surface density of the reflective surface which the light converging part 30 has may be 30% or less. Therefore, even if the sensor 60 is provided on the back surface 72, the object can be detected by the detection light transmitted through the light guide plate 70.
  • FIG. 4 schematically shows an operation input device 320 as a modification of the operation input device 20.
  • the operation input device 320 includes a half mirror 300 in addition to the components included in the operation input device 20.
  • the half mirror 300 is provided between the sensor 60 and the light guide plate 70. Specifically, the half mirror 300 is provided between the light projecting unit 61 and the light receiving unit 64 and the back surface 72 of the light guide plate 70. The light projected from the light projecting unit 61 passes through the half mirror 300 and is projected to the space on the exit surface 71 side. The reflected light reflected by the object in the range 180 or in the vicinity of the range 180 passes through the half mirror 300 and enters the light receiving unit 64. According to the operation input device 320, since the half mirror 300 is provided, the sensor 60 is hardly visible to the user.
  • FIG. 5 schematically shows an operation input device 420 as a modification of the operation input device 20.
  • the operation input device 420 includes a light shielding plate 400 in addition to the components included in the operation input device 20.
  • the light shielding plate 400 has an opening 401 and an opening 402.
  • the opening 401 is provided corresponding to the optical axis of the light projected from the light projecting unit 61.
  • the opening 402 is provided corresponding to the optical axis of the light received by the light receiving unit 64.
  • the light projected from the light projecting unit 61 passes through the opening 401 and is projected to the space on the emission surface 71 side.
  • the reflected light reflected by the object passes through the opening 402 and enters the light receiving unit 64.
  • the sensor 60 is less likely to be visually recognized by the user.
  • FIG. 6 schematically shows an operation input device 620 as a modification of the operation input device 20.
  • FIG. 6A is a perspective view schematically showing the operation input device 620.
  • FIG. 6B is a cross-sectional view of the operation input device 620 in the xz plane.
  • the operation input device 620 includes a cylindrical lens 600 in addition to the components included in the operation input device 620.
  • the cylindrical lens 600 is provided on the exit surface 71 side of the light guide plate 70 at a position corresponding to the light converging unit 30.
  • Each of the plurality of cylindrical lenses 600 extends along the x-axis direction.
  • each of the plurality of cylindrical lenses 600 extends along a direction orthogonal to the direction in which the light guide plate 70 guides light.
  • the plurality of cylindrical lenses 600 are provided side by side along the y-axis direction.
  • Reflected light from each reflecting surface of one light converging unit 30 is emitted from the emitting surface 71 in a state where the spread in the x-axis direction is small by the reflecting surface, and enters one cylindrical lens 600 corresponding to the light converging unit 30.
  • the reflected light from each reflecting surface of each light converging unit 30 is emitted from the emitting surface 71 in a state where the spread in the x-axis direction is small by the reflecting surface, and is respectively applied to the cylindrical lens 600 corresponding to each light converging unit 30.
  • the cylindrical lens 600 emits the reflected light incident from the corresponding light converging unit 30 with a reduced spread in the y-axis direction.
  • the reflected light is emitted by the cylindrical lens 600 in a state where the spread is further reduced.
  • the cylindrical lens 600 reduces the spread of the emitted light in the y-axis direction. Thereby, no matter what direction the user sees, the user recognizes that light is emitted from a point in the space substantially. Therefore, by providing the cylindrical lens 600, it is possible to further suppress effects such as blurring and distortion of a stereoscopic image.
  • the cylindrical lens 600 is an example of an emission restriction unit that restricts the spread of light that is guided to the light guide plate 70 and emitted from the emission surface 71.
  • the sensor 60 detects an object by light along the xz plane. That is, the sensor 60 detects an object by light along a plane orthogonal to the emission surface 71 and parallel to the extending direction of the plurality of cylindrical lenses 600.
  • the light projecting optical axis of the light projecting unit 61 and the light receiving optical axis of the light receiving unit 64 are substantially present in a plane orthogonal to the emission surface 71 and parallel to the extending direction of the plurality of cylindrical lenses 600.
  • the light projecting unit 61 and the light receiving unit 64 are provided corresponding to one cylindrical lens 600.
  • the light projecting unit 61 and the light receiving unit 64 are configured such that the light projecting unit 61, the light receiving unit 64, the top of one corresponding cylindrical lens 600 and the object detection range 180 are in a plane parallel to the extending direction of the cylindrical lens 600. It is provided so as to be substantially located. Therefore, the cylindrical lens 600 does not greatly affect the detection performance of the sensor 60.
  • the plurality of cylindrical lenses 600 substantially covers the entire emission surface 71.
  • the cylindrical lens 600 is provided in a partial region of the emission surface 71, and a part of the emission surface 71 may not be covered with the cylindrical lens 600.
  • FIG. 7 schematically shows an operation input device 720 as a modification of the operation input device 20.
  • FIG. 7A is a perspective view schematically showing the operation input device 720.
  • FIG. 7B is a cross-sectional view in the xz plane of the operation input device 720.
  • the operation input device 720 includes a cylindrical lens 700 in addition to the components included in the operation input device 20.
  • the cylindrical lens 700 is provided on the emission surface 71 at a position corresponding to one reflection surface of the light converging unit 30.
  • the cylindrical lens 700 is provided at a position corresponding to a plurality of reflecting surfaces of the light converging unit 30.
  • Each of the plurality of cylindrical lenses 700 extends along the y-axis direction.
  • each of the plurality of cylindrical lenses 600 extends along the direction in which the light guide plate 70 guides light.
  • the plurality of cylindrical lenses 700 are provided side by side along the x-axis direction.
  • the light reflected by each reflecting surface of the light converging unit 30 is emitted by the corresponding cylindrical lens 700 with the light spread made smaller.
  • the cylindrical lens 700 reduces the spread of the emitted light in the x-axis direction. Therefore, by providing the cylindrical lens 700, it is possible to further suppress influences such as blurring of a stereoscopic image.
  • the cylindrical lens 700 is an example of an emission limiting unit that limits the spread of the emitted light in the x-axis direction.
  • the spread of the emitted light in the x-axis direction may be limited by a parallax barrier.
  • the sensor 60 detects an object by light along the yz plane. That is, the sensor 60 detects an object by light along a plane orthogonal to the emission surface 71 and parallel to the extending direction of the plurality of cylindrical lenses 700.
  • the light projecting optical axis of the light projecting unit 61 and the light receiving optical axis of the light receiving unit 64 are substantially in a plane perpendicular to the emission surface 71 and parallel to the extending direction of the plurality of cylindrical lenses 700.
  • the light projecting unit 61 and the light receiving unit 64 are provided corresponding to one cylindrical lens 700.
  • the light projecting unit 61 and the light receiving unit 64 are configured such that the light projecting unit 61, the light receiving unit 64, the top of one corresponding cylindrical lens 600 and the object detection range 180 are in a plane parallel to the extending direction of the cylindrical lens 700. It is provided so as to be substantially located. Therefore, the cylindrical lens 700 does not greatly affect the detection performance of the sensor 60.
  • the plurality of cylindrical lenses 700 substantially cover the entire emission surface 71.
  • the cylindrical lens 700 is provided in a partial region of the emission surface 71, and a part of the emission surface 71 may not be covered with the cylindrical lens 700.
  • FIG. 8 schematically shows a light converging unit 130 and a light converging unit 132 as modifications of the light converging unit 30.
  • FIG. 8A schematically shows one light converging portion 130 formed by a part of the Fresnel lens.
  • a gap may be provided between the plurality of refractive surfaces (prism surfaces) of the light converging unit 130 that functions as a Fresnel lens.
  • the light converging unit 132 shown in FIG. 8 (b) is configured such that the light converging unit 130 is divided into a plurality of portions 140a, 140b, 140c, 140d, 140e, 140e, 140f, 140g and 140h along the x-axis direction. Corresponds to the one divided into The light from each part 140 of the light converging unit 132 converges to the same fixed point. Thus, by dividing the light converging portion into a plurality of portions, a so-called black matrix effect may occur, and the contrast of the image may increase.
  • a diffraction grating may be used as the light converging unit 30.

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  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
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  • Optics & Photonics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
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Abstract

La présente invention concerne un dispositif optique qui est pourvu : d'une plaque de guidage de lumière qui guide la lumière à l'intérieur d'un plan qui est parallèle à une surface d'émission de la lumière ; et d'un capteur qui est prévu sur un côté qui est à l'opposé de la surface d'émission par rapport à la plaque de guidage de lumière, et qui est destiné à détecter un objet qui est situé sur le côté surface d'émission au moyen de la lumière qui passe à travers une surface arrière, qui est sur le côté opposé à la surface d'émission, et à travers la surface d'émission. La plaque de guidage de lumière a une pluralité de parties de convergence de lumière qui ont des surfaces optiques respectives qui reçoivent la lumière qui est guidée par la plaque de guidage de lumière et provoquent l'émission de lumière à partir de la surface d'émission dans des directions qui convergent sensiblement au niveau d'un point de convergence dans l'espace ou dans une ligne de convergence ou qui divergent sensiblement à partir d'un point de convergence dans l'espace ou à partir d'une ligne de convergence. La pluralité de parties de convergence de lumière possède différents points de convergence ou lignes de convergence, et une image est formée dans l'espace sur le côté de surface d'émission à partir de l'agrégation de la pluralité de points de convergence ou lignes de convergence.
PCT/JP2015/086572 2015-01-13 2015-12-28 Dispositif optique et appareil d'entrée d'opération WO2016114102A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201580070068.XA CN107111150B (zh) 2015-01-13 2015-12-28 光学设备及操作输入装置
US15/538,842 US10338749B2 (en) 2015-01-13 2015-12-28 Optical device and operation input apparatus
DE112015005938.5T DE112015005938B4 (de) 2015-01-13 2015-12-28 Optische Vorrichtung und Betätigungseingabevorrichtung

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2015004535 2015-01-13
JP2015-004535 2015-01-13
JP2015-180912 2015-09-14
JP2015180912A JP6558166B2 (ja) 2015-01-13 2015-09-14 光デバイス及び操作入力装置

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* Cited by examiner, † Cited by third party
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JP2000510603A (ja) * 1996-02-28 2000-08-15 ミン リ 光波を処理するための光学構造
JP2008275922A (ja) * 2007-04-27 2008-11-13 Fujikura Ltd 表示装置
JP2009540440A (ja) * 2006-06-06 2009-11-19 スリーエム イノベイティブ プロパティズ カンパニー 仮想イメージを有するキーパッド
JP5509391B1 (ja) * 2013-06-07 2014-06-04 株式会社アスカネット 再生画像の指示位置を非接触で検知する方法及び装置
US20140268327A1 (en) * 2013-03-15 2014-09-18 Opsec Security Group, Inc. Optically variable device exhibiting non-diffractive three-dimensional optical effect

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000510603A (ja) * 1996-02-28 2000-08-15 ミン リ 光波を処理するための光学構造
JP2009540440A (ja) * 2006-06-06 2009-11-19 スリーエム イノベイティブ プロパティズ カンパニー 仮想イメージを有するキーパッド
JP2008275922A (ja) * 2007-04-27 2008-11-13 Fujikura Ltd 表示装置
US20140268327A1 (en) * 2013-03-15 2014-09-18 Opsec Security Group, Inc. Optically variable device exhibiting non-diffractive three-dimensional optical effect
JP5509391B1 (ja) * 2013-06-07 2014-06-04 株式会社アスカネット 再生画像の指示位置を非接触で検知する方法及び装置

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